DuncanMacWeb / textkit

Text layout framework

textkit

Layout process

1. split into paragraphs

2. get bidi runs and paragraph direction

3. font substitution - map to resolved font runs

4. script itemization

5. font shaping - text to glyphs

6. line breaking

7. bidi reordering

8. justification

9. get a list of rectangles by intersecting path, line, and exclusion paths

10. perform line breaking to get acceptable break points for each fragment

11. ellipsize line if necessary

12. bidi reordering

13. justification